Near-Net Shape Manufacturing of Hull Structures in Ship-Building by Using Control of Temperature Distribution and Material Properties

提高船体结构的切割、焊接、装配等制造工艺的精度，对船体结构的质量有着重要的影响。焊接变形是影响精密制造的重要因素之一，但对焊接变形进行有针对性的控制是一个难题。研究了一种控制近净形状制造焊缝变形的新方法，该方法通过控制焊接过程中的温度分布以及船体板和焊缝金属的材料性能来实现。

It is important for the quality of hull structures in ship-building to increase precision of manufacturing process such as cutting, welding and assembling. Weld distortion is one of the most important factors for precise manufacturing, but it was difficult to intentionally control weld distortion. A new methodology of controlling weld distortion for near-net shape manufacturing is studied by using control of temperature distributions during weld process and material properties in hull plate and weld metal.